*{
    margin: 0px;
    padding: 0px;
}
body{
    /*博客经常用这种方式制造一个不懂的背景*/
    background-image: url(../img/img_background.jpeg);
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size:100% 100%;
}
.main{
    height: 450px;
    width: 800px;
    position:absolute;
    top:50%;
    left:50%;
    margin:-225px 0 0 -400px;
}
.left{
    width: 25%;
    height: 100%;
    position: absolute;
    background-color: rgb(37,81,183);
}
.right{
    width: 75%;
    height: 100%;
    position: absolute;
    right: 0;
    background-color: white;
}
.content{
    width:80px;
    height: 800px;
    position: absolute;
    font-size: 30px;
    top:25px;
    left:80px;
    word-wrap: break-word;
    letter-spacing: 20px;
}
.form{
    font-size: 20px;
    /*width: 100%;*/
    position: absolute;
    top:35%;
    left: 25%;
}
.title{
    font-size: 25px;
    text-align:center;
    height: 24%;
    margin-top: 55px;
}
.form span{
    display: inline-block;
    width: 80px;
    height: 24px;
    text-align:center;
}
.input input{
    display: inline-block;
    font-size: 20px;
    height: 24px;
    width:200px;
    margin-bottom: 25px;
}
.error{
    height: 30px;
    font-size: 10px;
    color: red;
    /*margin: 0 auto;*/
    text-align: center;
    line-height: 30px;
    margin-bottom: 10px;
    margin-top: -20px;
    margin-left: 20px;
}
.btn{
    width: 60px;
    height: 33px;
    /*margin-top: 30px;*/
}
#btn1{
    position: absolute;
    left:22px;
}
#btn2{
    position: absolute;
    left:225px;
}
#btn3{
    position: absolute;
    left:22px;
}
#btn4{
    position: absolute;
    left:225px;
}
/*.btnLeft{*/
/*    float: left;*/
/*    margin-left: 5px;*/
/*}*/
/*.btnRight{*/
/*    float: right;*/
/*    margin-right: 5px;*/
/*}*/
/*.btnDiv{*/
/*    position: absolute;*/
/*    width: 100%;*/
/*    bottom: 30px;*/
/*}*/